var NumberUtil = (function($) {
	return {
		/**
		 * prepend '0' to number if length of number is less than 'length'
		 * Ex: input: number = 1, length = 3 => output: 001
		 *     input: number = 999, length = 2 => output: 999
		 */
		getFixedLengthNumber : function(number, length) {
			var numberStr = number.toString();
			var inputLength = numberStr.length;
			var requiredPrefix = length - inputLength;
			var outputNumberStr = numberStr;
			var i;
			for (i = 0; i < requiredPrefix; i++) {
				outputNumberStr = '0' + outputNumberStr;
			}
			return outputNumberStr;
		}
	};
})(jQuery);
